“Paul Cauthen draws on the traditions of Waylon Jennings and Muscle Shoals soul in My Gospel, his first album since leaving Sons of Fathers. His booming baritone is enough to stop us in our tracks — backed by the formidable Texas Gentlemen, the set recalled an old-time revival in its infections energy. The songs shared on Saturday included “Marfa Lights,” about the dark landscape of far west Texas, and “My Gospel,” with soaring church-choir harmonies.”